PDF-Retreat of Glaciers in Glacier National Park

In Glacier National Park GNP MT some effects of global climate change are strikingly clear Glacier recession is underway and many glaciers have already disappeared The retreat of these small. January 21, 2011. . Glaciers act as agents of erosion and deposition to help to create unique landforms which you will study in this unit. Glacier. : A large mass of ice resting on land or floating as an ice shelf in the sea adjacent to land. Jeremy . Fyke. , Bill Lipscomb. Los Alamos National Laboratory. Goal: Simulate the coupled evolution of Arctic glaciers and ice caps. . within RASM. Evolving land ice . area. . A. ffects vegetation extent and albedo. Ms. Martel. What Is A Glacier?. About 75% of Earth’s fresh water is frozen in glaciers.. A glacier is a large mass of compacted snow and ice that moves under the force of gravity.. Glaciers help to carve Earth’s landscapes as it erodes geological features in one place and then re-deposits the material elsewhere. . 5.7B. Thinking About Glaciers. Glaciers cover about one-tenth of the Earth’s surface. Most of the fresh water found on the Earth is frozen in glaciers.. Glaciers move very slowly and can cause very slow changes to the Earth’s surface.. Frank Paul, Michael . Zemp. Dept. of Geography, University of Zurich. Glaciers around the world. GLACIER DISTRIBUTION & INVENTORY. Main purpose of glacier monitoring. The key questions. How much glacier ice is out there?. Prairie School. Earth Science. Glaciers: Moving Ice. When you take a handful of snow and squeeze it, you are creating a product that is similar to that of glaciers. . Glacier: fast moving, large mass of ice. . Glacier Movement. Deposits by Glaciers. The Ice Age. Glaciers and Global Warming. Glacial Rebound . …………………. Snow. Line. …………………... Glaciers form in areas covered by snow, where more snow falls than melts each year.. Glacier – thick ice mass that forms over hundreds or thousands of years.. 15, 000 years ago > 30 % coverage - Today 10 % coverage. Valley Glaciers. Ice Sheets. Types of Glaciers. Valley Glaciers. Chapter 9 - Section 3, 4, 5, and 6. How Water Erodes. Most sediment washes or falls into a river as a result of mass movement and runoff. Other sediment erodes from the bottom or sides of the river. Streams carry sediment in several . Kelly Cronin, Beth . Stricker. , Richard . Kissel. , Rob Ross, Cassie Mundt. cronin@museumoftheearth.org. Paleontological Research Institution and its Museum of the Earth. Pic of current exhibit. A Visitor Survey. Glaciers. Geologists define a . glacier. as any large mass of ice that moves slowly over land.. There are two types of glaciers:. Continental glaciers. Valley glaciers. Continental Glaciers. A . continental glacier. Taku Glacier 2 Calculate the gradient of the Taku Glacier from 1000 ft It originates on land from the accumulation, compaction, and . recrystallization. of snow. .. A glacier appears to be motionless, but glaciers move very slowly.. Glaciers are dynamic weathering . and erosional . Once . glacial ice exceeds a thickness of about 150 feet, the weight of the overlying ice causes . the . base of . the glacier . to become plastic and flow like a very viscous liquid. While the bottom ice responds as a plastic solid, the surface ice is very brittle. However, from the surface down to the top of the plastic portion of the glacier, the ice experiences a decrease in .